sinky

sink +‎ -y

• IPA^(key): /ˈsɪŋki/

• Audio (Southern England)

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sinky (comparative sinkier, superlative sinkiest)

1. (informal) Into which one can sink.
   • 1884 January 1, Laura G. Collins, “Paris”, in By-gone Tourist Days: Letters of Travel, Cincinnati, Oh.: The Robert Clarke Company, published 1900, page 159:

     Then I settled myself in the roomiest, deepest, sinkiest of spring-cushioned “arm-chairs,” and fastened my gaze on him, to wander no more while he stayed.

• kitchen-sinky